<li>
    <img src="{{ $user->gravatar() }}" alt="{{ $user->name }}" class="gravatar" />
    <a href="{{ route('users.show',['user'=>$user->id]) }}" class="username">
        {{ $user->name }}
    </a>
    @can('destroy',$user)
    <form action="{{ route('users.destroy',$user->id) }}" method="POST">
        {{ csrf_field() }}
        {{ method_field('DELETE') }}
        <button type="submit" class="btn btn-sm btn-danger delete-btn">删除</button>
    </form>
    @endcan
</li>